Product Introduction

This precision-engineered triangular sealing washer is a critical component for maintaining fluid-tight connections in heavy-duty truck systems. It is designed to create a reliable seal between mating surfaces, preventing lubricant leaks and protecting internal components from contamination.

Structure & Material

• Material: Nitrile Butadiene Rubber (NBR) or high-quality composite material, selected for its excellent oil resistance, durability, and ability to withstand high temperatures and pressures.

• Design: A triangular washer with a central circular opening and three mounting holes, matching the geometry of the corresponding component. The uniform thickness ensures consistent compression and a reliable seal.

Performance

• Reliable Sealing: The NBR or composite material creates a tight, pressure-tight seal, preventing fluid leaks and maintaining system integrity.

• Oil & Chemical Resistance: Resists degradation from gear oils, lubricants, and other automotive chemicals, maintaining sealing integrity over time.

• Temperature Stability: Performs reliably across a wide temperature range, from extreme cold to high operating temperatures.

Compatibility

• Direct OE replacement for Sinotruk HOWO models, matching the exact dimensions, mounting hole spacing, and material specifications of the original triangular washer.

Core Function

1. Fluid Containment: Seals three-bolt connections to prevent lubricant or fluid leaks.

2. Contamination Protection: Blocks dirt, water, and debris from entering sealed systems, protecting internal components.

3. Load Distribution: Distributes clamping forces evenly across the mating surface, preventing warping or damage.

Washer 810W35925-0018 Sinotruk Sitrak – OEM Cushion Washer for Rear Axle Assembly

When your Sitrak heavy-duty truck hits the road under extreme loads, every single component matters — especially the ones you cannot see. The Washer 810W35925-0018 is a precision-engineered cushion washer designed exclusively for Sinotruk Sitrak trucks. It plays a critical role in buffering vibration, absorbing shock, and preventing bolt loosening across the rear axle system. Sourced directly from our factory at Mettlead, this washer delivers OEM-grade reliability at a competitive price that procurement managers appreciate.

Whether you are maintaining a fleet of Sitrak tractor units or stocking parts for your workshop, this genuine-spec washer ensures long-lasting fastening performance. Moreover, it helps protect adjacent components from premature wear caused by metal-on-metal contact and road-induced vibration.

Key Functions and Benefits of Washer 810W35925-0018

Vibration Dampening and Shock Absorption

This washer sits between critical fastening points in the rear axle assembly, where it absorbs road vibrations before they can travel through the bolted joint. As a result, it significantly reduces fatigue stress on surrounding components, extending the service life of the entire assembly.

Anti-Loosening Fastening Performance

Heavy-duty trucks face constant dynamic loads. Without a proper cushion washer, bolts can gradually loosen over time — leading to dangerous play in the axle system. The 810W35925-0018 washer provides consistent clamping force retention, so your fasteners stay tight mile after mile.

OEM Dimensional Accuracy

Manufactured to match the original Sinotruk specifications precisely, this washer fits perfectly without any modification. You simply drop it in during assembly or maintenance, which saves valuable workshop time and eliminates compatibility concerns.

Durable Material Construction

Crafted from high-quality materials that resist corrosion, deformation, and heat cycling, this washer maintains its structural integrity even under the harshest operating conditions — from scorching desert highways to freezing mountain passes.

Cost-Effective Factory-Direct Pricing

Because Mettlead supplies directly from the factory, you get genuine-quality parts without the inflated middleman markup. This means better margins for distributors and lower maintenance costs for fleet operators.

Technical Specifications – Washer 810W35925-0018 Sinotruk Sitrak

Application Scenario – Where Does Washer 810W35925-0018 Fit?

This washer is specifically designed for the Sinotruk Sitrak heavy-duty truck platform. It installs within the rear axle system, where it serves three essential purposes:

• Cushioning and shock absorption – Protects bolted joints from impact loads transmitted through the drivetrain and suspension.
• Fastener anti-loosening – Maintains bolt preload under dynamic cycling, preventing dangerous joint separation.
• Component protection – Acts as a buffer layer that prevents surface damage between mating parts.

In other words, this small but vital washer keeps your Sitrak’s rear axle assembly tight, quiet, and safe — even after hundreds of thousands of kilometers on demanding routes.

Looking for more rear axle components? Browse our complete Rear Axle Parts catalog for compatible items.

OEM / ODM Capability and Custom Packaging

At Mettlead, we understand that different markets have different requirements. That is why we offer flexible solutions tailored to your business needs:

• White-Label Packaging – We can supply Washer 810W35925-0018 under your own brand label, helping you build brand equity in your local market.
• Custom Packaging – Need specific box sizes, multilingual labels, or barcoding? We accommodate custom packaging requests for bulk orders.
• Strict Quality Control – Every batch undergoes dimensional inspection and material verification before shipment, ensuring consistent OEM-grade quality.
• Flexible Order Quantities – Whether you need a small trial order or a full container load, we work with you to find the right solution.

Furthermore, we welcome factory visits so you can inspect our production lines and quality processes firsthand. Transparency builds trust, and we are confident in what you will find.

Explore our full range of Sitrak Heavy-Duty Parts to discover thousands of genuine-spec components available for immediate supply.

Frequently Asked Questions – Washer 810W35925-0018

What is the exact function of Washer 810W35925-0018 in the rear axle?

This cushion washer sits between fastening surfaces in the rear axle assembly. Its primary job is to absorb vibration, dampen shock loads, and prevent bolt loosening caused by the constant dynamic forces that heavy-duty trucks experience during operation.

Is this washer compatible with all Sinotruk Sitrak truck models?

Yes, Washer 810W35925-0018 is manufactured to the original Sinotruk specification and fits Sitrak C7H, C5H, and related heavy-duty platforms that use this part number in their rear axle system. However, we always recommend confirming the part number against your vehicle’s parts catalog before ordering.

How does this washer differ from a standard flat washer?

Unlike a basic flat washer that only distributes load, the 810W35925-0018 is specifically engineered as a cushion washer. It provides vibration dampening and anti-loosening properties that a standard washer simply cannot offer. The material composition and dimensional tolerances are optimized for the high-stress rear axle environment.

Can I order this washer in bulk for my parts inventory?

Absolutely. Mettlead specializes in bulk supply for distributors, workshops, and fleet operators. We offer competitive tiered pricing on larger quantities, and our logistics team ensures fast, reliable delivery to your location worldwide.

What quality assurance does this washer undergo before shipping?

Every production batch passes through our strict quality control process, which includes dimensional measurement, material hardness testing, and surface treatment inspection. We ensure each washer meets or exceeds the original Sinotruk factory specifications before it leaves our warehouse.

Will this washer corrode in harsh environments?

The 810W35925-0018 features an anti-corrosion surface treatment designed to withstand moisture, road salt, and temperature extremes. While no component lasts forever, this washer is built to deliver reliable performance throughout its intended service interval.

For a comprehensive overview of all available Sitrak components organized by system, visit our Sinotruk Sitrak Truck Parts Full Category Guide.

Ready to Order Washer 810W35925-0018? Let’s Talk.

Getting the right parts at the right price should not be complicated. At Mettlead, we make it simple: factory-direct pricing, fast lead times, secure payment options, and a dedicated team that understands heavy-duty truck parts inside and out.

Whether you need a quotation for Washer 810W35925-0018, want to discuss bulk pricing, or have technical questions about fitment — we are here to help.

Contact Us Now to request your quote and experience the Mettlead difference: genuine-quality Sitrak parts, delivered globally, priced competitively.